40L45CWPBF datasheet(4/6 Pages) IRF

Part #	40L45CWPBF

Description	SCHOTTKY RECTIFIER 2 x 20 Amps

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Manufacturer	IRF [International Rectifier]

Direct Link	http://www.irf.com

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40L40CWPbF, 40L45CWPbF

Bulletin PD-20794 rev. A 11/06

4

www.irf.com

Fig. 7 - Max. Non-Repetitive Surge Current (Per Leg)

Fig. 5 - Max. Allowable Case Temperature

Vs. Average Forward Current (Per Leg)

Fig. 8 - Unclamped Inductive Test Circuit

Fig. 6 - Forward Power Loss Characteristics

(Per Leg)

FREE-WHEEL

DIODE

40HFL40S02

CURRENT

MONITOR

HIGH-SPEED

SWITCH

IRFP460

L

DUT

Rg = 25 ohm

Vd = 25 Volt

+

(2)

Formula used: T

C = TJ - (Pd + PdREV) x RthJC;

Pd = Forward Power Loss = I

F(AV) x VFM @ (IF(AV) / D) (see Fig. 6);

Pd

REV = Inverse Power Loss = VR1 x IR (1 - D); IR @ VR1 = 80% rated VR

0

2

4

6

8

10

12

14

16

18

0

5

10

15

20

25

30

DC

F(AV)

RMSLimit

D = 0.20

D = 0.25

D = 0.33

D = 0.50

D = 0.75

Average Forward Current - I

(A)

100

110

120

130

140

150

0

5

10

15

20

25

30

DC

F(AV)

see note (2)

Average Forward Current - I

(A)

Square wave (D = 0.50)

80%Rated V applied

R

100

1000

10000

10

100

1000

10000

p

At Any Rated Load Condition

And With Rated V

Applied

Following Surge

RRM

Square Wave Pulse Duration - t

(microsec)

40L45CWPbF revA.pmd

21-Nov-06, 11:05

4

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